From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/powerpc/platforms/ps3/system-bus.c | 803 ++++++++++++++++++++++++++++++++ 1 file changed, 803 insertions(+) create mode 100644 arch/powerpc/platforms/ps3/system-bus.c (limited to 'arch/powerpc/platforms/ps3/system-bus.c') diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c new file mode 100644 index 000000000..38a7e0229 --- /dev/null +++ b/arch/powerpc/platforms/ps3/system-bus.c @@ -0,0 +1,803 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 system bus driver. + * + * Copyright (C) 2006 Sony Computer Entertainment Inc. + * Copyright 2006 Sony Corp. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "platform.h" + +static struct device ps3_system_bus = { + .init_name = "ps3_system", +}; + +/* FIXME: need device usage counters! */ +static struct { + struct mutex mutex; + int sb_11; /* usb 0 */ + int sb_12; /* usb 0 */ + int gpu; +} usage_hack; + +static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id, + u64 dev_id) +{ + return dev->bus_id == bus_id && dev->dev_id == dev_id; +} + +static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev) +{ + int result; + + BUG_ON(!dev->bus_id); + mutex_lock(&usage_hack.mutex); + + if (ps3_is_device(dev, 1, 1)) { + usage_hack.sb_11++; + if (usage_hack.sb_11 > 1) { + result = 0; + goto done; + } + } + + if (ps3_is_device(dev, 1, 2)) { + usage_hack.sb_12++; + if (usage_hack.sb_12 > 1) { + result = 0; + goto done; + } + } + + result = lv1_open_device(dev->bus_id, dev->dev_id, 0); + + if (result) { + pr_warn("%s:%d: lv1_open_device dev=%u.%u(%s) failed: %s\n", + __func__, __LINE__, dev->match_id, dev->match_sub_id, + dev_name(&dev->core), ps3_result(result)); + result = -EPERM; + } + +done: + mutex_unlock(&usage_hack.mutex); + return result; +} + +static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev) +{ + int result; + + BUG_ON(!dev->bus_id); + mutex_lock(&usage_hack.mutex); + + if (ps3_is_device(dev, 1, 1)) { + usage_hack.sb_11--; + if (usage_hack.sb_11) { + result = 0; + goto done; + } + } + + if (ps3_is_device(dev, 1, 2)) { + usage_hack.sb_12--; + if (usage_hack.sb_12) { + result = 0; + goto done; + } + } + + result = lv1_close_device(dev->bus_id, dev->dev_id); + BUG_ON(result); + +done: + mutex_unlock(&usage_hack.mutex); + return result; +} + +static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev) +{ + int result; + + mutex_lock(&usage_hack.mutex); + + usage_hack.gpu++; + if (usage_hack.gpu > 1) { + result = 0; + goto done; + } + + result = lv1_gpu_open(0); + + if (result) { + pr_warn("%s:%d: lv1_gpu_open failed: %s\n", __func__, + __LINE__, ps3_result(result)); + result = -EPERM; + } + +done: + mutex_unlock(&usage_hack.mutex); + return result; +} + +static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev) +{ + int result; + + mutex_lock(&usage_hack.mutex); + + usage_hack.gpu--; + if (usage_hack.gpu) { + result = 0; + goto done; + } + + result = lv1_gpu_close(); + BUG_ON(result); + +done: + mutex_unlock(&usage_hack.mutex); + return result; +} + +int ps3_open_hv_device(struct ps3_system_bus_device *dev) +{ + BUG_ON(!dev); + pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); + + switch (dev->match_id) { + case PS3_MATCH_ID_EHCI: + case PS3_MATCH_ID_OHCI: + case PS3_MATCH_ID_GELIC: + case PS3_MATCH_ID_STOR_DISK: + case PS3_MATCH_ID_STOR_ROM: + case PS3_MATCH_ID_STOR_FLASH: + return ps3_open_hv_device_sb(dev); + + case PS3_MATCH_ID_SOUND: + case PS3_MATCH_ID_GPU: + return ps3_open_hv_device_gpu(dev); + + case PS3_MATCH_ID_AV_SETTINGS: + case PS3_MATCH_ID_SYSTEM_MANAGER: + pr_debug("%s:%d: unsupported match_id: %u\n", __func__, + __LINE__, dev->match_id); + pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, + dev->bus_id); + BUG(); + return -EINVAL; + + default: + break; + } + + pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, + dev->match_id); + BUG(); + return -ENODEV; +} +EXPORT_SYMBOL_GPL(ps3_open_hv_device); + +int ps3_close_hv_device(struct ps3_system_bus_device *dev) +{ + BUG_ON(!dev); + pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); + + switch (dev->match_id) { + case PS3_MATCH_ID_EHCI: + case PS3_MATCH_ID_OHCI: + case PS3_MATCH_ID_GELIC: + case PS3_MATCH_ID_STOR_DISK: + case PS3_MATCH_ID_STOR_ROM: + case PS3_MATCH_ID_STOR_FLASH: + return ps3_close_hv_device_sb(dev); + + case PS3_MATCH_ID_SOUND: + case PS3_MATCH_ID_GPU: + return ps3_close_hv_device_gpu(dev); + + case PS3_MATCH_ID_AV_SETTINGS: + case PS3_MATCH_ID_SYSTEM_MANAGER: + pr_debug("%s:%d: unsupported match_id: %u\n", __func__, + __LINE__, dev->match_id); + pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, + dev->bus_id); + BUG(); + return -EINVAL; + + default: + break; + } + + pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, + dev->match_id); + BUG(); + return -ENODEV; +} +EXPORT_SYMBOL_GPL(ps3_close_hv_device); + +#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) +static void _dump_mmio_region(const struct ps3_mmio_region* r, + const char* func, int line) +{ + pr_debug("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id, + r->dev->dev_id); + pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr); + pr_debug("%s:%d: len %lxh\n", func, line, r->len); + pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr); +} + +static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r) +{ + int result; + u64 lpar_addr; + + result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, + r->bus_addr, r->len, r->page_size, &lpar_addr); + r->lpar_addr = lpar_addr; + + if (result) { + pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n", + __func__, __LINE__, ps3_result(result)); + r->lpar_addr = 0; + } + + dump_mmio_region(r); + return result; +} + +static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) +{ + /* device specific; do nothing currently */ + return 0; +} + +int ps3_mmio_region_create(struct ps3_mmio_region *r) +{ + return r->mmio_ops->create(r); +} +EXPORT_SYMBOL_GPL(ps3_mmio_region_create); + +static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) +{ + int result; + + dump_mmio_region(r); + result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, + r->lpar_addr); + + if (result) + pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", + __func__, __LINE__, ps3_result(result)); + + r->lpar_addr = 0; + return result; +} + +static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) +{ + /* device specific; do nothing currently */ + return 0; +} + + +int ps3_free_mmio_region(struct ps3_mmio_region *r) +{ + return r->mmio_ops->free(r); +} + +EXPORT_SYMBOL_GPL(ps3_free_mmio_region); + +static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = { + .create = ps3_sb_mmio_region_create, + .free = ps3_sb_free_mmio_region +}; + +static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = { + .create = ps3_ioc0_mmio_region_create, + .free = ps3_ioc0_free_mmio_region +}; + +int ps3_mmio_region_init(struct ps3_system_bus_device *dev, + struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len, + enum ps3_mmio_page_size page_size) +{ + r->dev = dev; + r->bus_addr = bus_addr; + r->len = len; + r->page_size = page_size; + switch (dev->dev_type) { + case PS3_DEVICE_TYPE_SB: + r->mmio_ops = &ps3_mmio_sb_region_ops; + break; + case PS3_DEVICE_TYPE_IOC0: + r->mmio_ops = &ps3_mmio_ioc0_region_ops; + break; + default: + BUG(); + return -EINVAL; + } + return 0; +} +EXPORT_SYMBOL_GPL(ps3_mmio_region_init); + +static int ps3_system_bus_match(struct device *_dev, + struct device_driver *_drv) +{ + int result; + struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv); + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + + if (!dev->match_sub_id) + result = dev->match_id == drv->match_id; + else + result = dev->match_sub_id == drv->match_sub_id && + dev->match_id == drv->match_id; + + if (result) + pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n", + __func__, __LINE__, + dev->match_id, dev->match_sub_id, dev_name(&dev->core), + drv->match_id, drv->match_sub_id, drv->core.name); + else + pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n", + __func__, __LINE__, + dev->match_id, dev->match_sub_id, dev_name(&dev->core), + drv->match_id, drv->match_sub_id, drv->core.name); + + return result; +} + +static int ps3_system_bus_probe(struct device *_dev) +{ + int result = 0; + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + struct ps3_system_bus_driver *drv; + + BUG_ON(!dev); + dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); + + drv = ps3_system_bus_dev_to_system_bus_drv(dev); + BUG_ON(!drv); + + if (drv->probe) + result = drv->probe(dev); + else + pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, + dev_name(&dev->core)); + + pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); + return result; +} + +static void ps3_system_bus_remove(struct device *_dev) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + struct ps3_system_bus_driver *drv; + + BUG_ON(!dev); + dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); + + drv = ps3_system_bus_dev_to_system_bus_drv(dev); + BUG_ON(!drv); + + if (drv->remove) + drv->remove(dev); + else + dev_dbg(&dev->core, "%s:%d %s: no remove method\n", + __func__, __LINE__, drv->core.name); + + pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); +} + +static void ps3_system_bus_shutdown(struct device *_dev) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + struct ps3_system_bus_driver *drv; + + BUG_ON(!dev); + + dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, + dev->match_id); + + if (!dev->core.driver) { + dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, + __LINE__); + return; + } + + drv = ps3_system_bus_dev_to_system_bus_drv(dev); + + BUG_ON(!drv); + + dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, + dev_name(&dev->core), drv->core.name); + + if (drv->shutdown) + drv->shutdown(dev); + else if (drv->remove) { + dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", + __func__, __LINE__, drv->core.name); + drv->remove(dev); + } else { + dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", + __func__, __LINE__, drv->core.name); + BUG(); + } + + dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); +} + +static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + + if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id, + dev->match_sub_id)) + return -ENOMEM; + return 0; +} + +static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, + char *buf) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id, + dev->match_sub_id); + + return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; +} +static DEVICE_ATTR_RO(modalias); + +static struct attribute *ps3_system_bus_dev_attrs[] = { + &dev_attr_modalias.attr, + NULL, +}; +ATTRIBUTE_GROUPS(ps3_system_bus_dev); + +static struct bus_type ps3_system_bus_type = { + .name = "ps3_system_bus", + .match = ps3_system_bus_match, + .uevent = ps3_system_bus_uevent, + .probe = ps3_system_bus_probe, + .remove = ps3_system_bus_remove, + .shutdown = ps3_system_bus_shutdown, + .dev_groups = ps3_system_bus_dev_groups, +}; + +static int __init ps3_system_bus_init(void) +{ + int result; + + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ENODEV; + + pr_debug(" -> %s:%d\n", __func__, __LINE__); + + mutex_init(&usage_hack.mutex); + + result = device_register(&ps3_system_bus); + BUG_ON(result); + + result = bus_register(&ps3_system_bus_type); + BUG_ON(result); + + pr_debug(" <- %s:%d\n", __func__, __LINE__); + return result; +} + +core_initcall(ps3_system_bus_init); + +/* Allocates a contiguous real buffer and creates mappings over it. + * Returns the virtual address of the buffer and sets dma_handle + * to the dma address (mapping) of the first page. + */ +static void * ps3_alloc_coherent(struct device *_dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + unsigned long attrs) +{ + int result; + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + unsigned long virt_addr; + + flag &= ~(__GFP_DMA | __GFP_HIGHMEM); + flag |= __GFP_ZERO; + + virt_addr = __get_free_pages(flag, get_order(size)); + + if (!virt_addr) { + pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); + goto clean_none; + } + + result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, + CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | + CBE_IOPTE_SO_RW | CBE_IOPTE_M); + + if (result) { + pr_debug("%s:%d: ps3_dma_map failed (%d)\n", + __func__, __LINE__, result); + BUG_ON("check region type"); + goto clean_alloc; + } + + return (void*)virt_addr; + +clean_alloc: + free_pages(virt_addr, get_order(size)); +clean_none: + dma_handle = NULL; + return NULL; +} + +static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, + dma_addr_t dma_handle, unsigned long attrs) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + + ps3_dma_unmap(dev->d_region, dma_handle, size); + free_pages((unsigned long)vaddr, get_order(size)); +} + +/* Creates TCEs for a user provided buffer. The user buffer must be + * contiguous real kernel storage (not vmalloc). The address passed here + * comprises a page address and offset into that page. The dma_addr_t + * returned will point to the same byte within the page as was passed in. + */ + +static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction direction, + unsigned long attrs) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + int result; + dma_addr_t bus_addr; + void *ptr = page_address(page) + offset; + + result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, + &bus_addr, + CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | + CBE_IOPTE_SO_RW | CBE_IOPTE_M); + + if (result) { + pr_debug("%s:%d: ps3_dma_map failed (%d)\n", + __func__, __LINE__, result); + } + + return bus_addr; +} + +static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, + unsigned long attrs) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + int result; + dma_addr_t bus_addr; + u64 iopte_flag; + void *ptr = page_address(page) + offset; + + iopte_flag = CBE_IOPTE_M; + switch (direction) { + case DMA_BIDIRECTIONAL: + iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; + break; + case DMA_TO_DEVICE: + iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R; + break; + case DMA_FROM_DEVICE: + iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; + break; + default: + /* not happened */ + BUG(); + } + result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, + &bus_addr, iopte_flag); + + if (result) { + pr_debug("%s:%d: ps3_dma_map failed (%d)\n", + __func__, __LINE__, result); + } + return bus_addr; +} + +static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction direction, unsigned long attrs) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + int result; + + result = ps3_dma_unmap(dev->d_region, dma_addr, size); + + if (result) { + pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", + __func__, __LINE__, result); + } +} + +static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, + int nents, enum dma_data_direction direction, unsigned long attrs) +{ +#if defined(CONFIG_PS3_DYNAMIC_DMA) + BUG_ON("do"); + return -EPERM; +#else + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nents, i) { + int result = ps3_dma_map(dev->d_region, sg_phys(sg), + sg->length, &sg->dma_address, 0); + + if (result) { + pr_debug("%s:%d: ps3_dma_map failed (%d)\n", + __func__, __LINE__, result); + return -EINVAL; + } + + sg->dma_length = sg->length; + } + + return nents; +#endif +} + +static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, + int nents, + enum dma_data_direction direction, + unsigned long attrs) +{ + BUG(); + return -EINVAL; +} + +static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, unsigned long attrs) +{ +#if defined(CONFIG_PS3_DYNAMIC_DMA) + BUG_ON("do"); +#endif +} + +static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + unsigned long attrs) +{ + BUG(); +} + +static int ps3_dma_supported(struct device *_dev, u64 mask) +{ + return mask >= DMA_BIT_MASK(32); +} + +static const struct dma_map_ops ps3_sb_dma_ops = { + .alloc = ps3_alloc_coherent, + .free = ps3_free_coherent, + .map_sg = ps3_sb_map_sg, + .unmap_sg = ps3_sb_unmap_sg, + .dma_supported = ps3_dma_supported, + .map_page = ps3_sb_map_page, + .unmap_page = ps3_unmap_page, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, + .alloc_pages = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, +}; + +static const struct dma_map_ops ps3_ioc0_dma_ops = { + .alloc = ps3_alloc_coherent, + .free = ps3_free_coherent, + .map_sg = ps3_ioc0_map_sg, + .unmap_sg = ps3_ioc0_unmap_sg, + .dma_supported = ps3_dma_supported, + .map_page = ps3_ioc0_map_page, + .unmap_page = ps3_unmap_page, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, + .alloc_pages = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, +}; + +/** + * ps3_system_bus_release_device - remove a device from the system bus + */ + +static void ps3_system_bus_release_device(struct device *_dev) +{ + struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); + kfree(dev); +} + +/** + * ps3_system_bus_device_register - add a device to the system bus + * + * ps3_system_bus_device_register() expects the dev object to be allocated + * dynamically by the caller. The system bus takes ownership of the dev + * object and frees the object in ps3_system_bus_release_device(). + */ + +int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) +{ + int result; + static unsigned int dev_ioc0_count; + static unsigned int dev_sb_count; + static unsigned int dev_vuart_count; + static unsigned int dev_lpm_count; + + if (!dev->core.parent) + dev->core.parent = &ps3_system_bus; + dev->core.bus = &ps3_system_bus_type; + dev->core.release = ps3_system_bus_release_device; + + switch (dev->dev_type) { + case PS3_DEVICE_TYPE_IOC0: + dev->core.dma_ops = &ps3_ioc0_dma_ops; + dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); + break; + case PS3_DEVICE_TYPE_SB: + dev->core.dma_ops = &ps3_sb_dma_ops; + dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); + + break; + case PS3_DEVICE_TYPE_VUART: + dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); + break; + case PS3_DEVICE_TYPE_LPM: + dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); + break; + default: + BUG(); + } + + dev->core.of_node = NULL; + set_dev_node(&dev->core, 0); + + pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); + + result = device_register(&dev->core); + return result; +} + +EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); + +int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) +{ + int result; + + pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); + + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ENODEV; + + drv->core.bus = &ps3_system_bus_type; + + result = driver_register(&drv->core); + pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); + return result; +} + +EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); + +void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) +{ + pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); + driver_unregister(&drv->core); + pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); +} + +EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); -- cgit v1.2.3